Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities
Net income	$ 5,541,000	$ 7,840,000
Adjustments to reconcile net income to net cash provided by operations
Depreciation and amortization	503,000	535,000
Deferred income taxes	(261,000)	189,000
Premium amortized (discount earned) on U.S. Treasury Bills and bonds	(4,000)	(13,000)
Other-than-temporary impairment losses on investments	2,855,000
(Increase) decrease in current assets
Accounts receivable, net	886,000	2,614,000
Inventories	1,000	(15,000)
Prepaid expenses and other assets	(9,000)	(2,000)
Increase (decrease) in current liabilities
Accounts payable	(235,000)	(443,000)
Accrued liabilities	(1,415,000)	(693,000)
Income taxes	(952,000)	(96,000)
Deferred subscription and other revenues	49,000	401,000
Net cash provided by operating activities	6,959,000	10,317,000
Cash flows from investing activities
Maturities and sales of U.S. Treasury Bills	19,400,000	51,199,000
Purchases of U.S. Treasury Bills	(7,099,000)	(50,790,000)
Purchases of marketable securities	(20,961,000)	(11,154,000)
Purchases of property, plant and equipment	(372,000)	(129,000)
Net cash used for investing activities	(9,032,000)	(10,874,000)
Decrease in cash and cash equivalents	(2,073,000)	(557,000)
Cash and cash equivalents
Beginning of year	3,058,000	3,615,000
End of year	985,000	3,058,000
Interest paid during year	186,000
Income taxes paid during year	$ 3,573,000	$ 4,042,000